Patent · US Expired

Dye mixtures containing azo and quinophthalone dyes

US5318601A · kind A · utility

0Cited by

6References

5Claims

0Family size

Assignee

BASF SE

Inventors

Arno Lange · Bad Dürkheim, DE
Gert Motzkus · Ludwigshafen, DE
Helmut Degen · Bischofswerda, DE
Volker Walther · Bad Dürkheim, DE

Key dates

Filing date	Mar 29, 1993
Grant date	Jun 7, 1994
Priority date	—
Expiry date	Mar 29, 2013

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S8/922
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Dye mixtures containing from 50 to 95% by weight, of a 4-chloro-2-nitrophenylazohydroxypyridone dye and from 5 to 50% by weight of a chlorinated quinophthalone dye and/or from 5 to 20% by weight of an unsubstituted quinophthalone dye, dye formulations containing the novel dye mixtures and the use of dye mixtures for dyeing polyesters or printing them by the direct printing method.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.